小麦叶片中多种微量元素的电感耦合等离子体质谱测定

Determination of the Trace Elements in Wheat Leaf by Inductively Coupled Plasms Mass Spectrometry

[目的]分析小麦叶片中10种微量元素的含量。[方法]采用电感耦合等离子体质谱法，对处于生长时期的小麦叶片中的硼、镁、钾、钙、锰、铁、铜、锌、硒、钼10种有益微量元素的含量进行分析。[结果]结果表明，该方法检出限为0．146～8．260ng／g；标准物质的测定结果与认定值相符合，相对标准偏差（n=5）小于10％。小麦叶片样品的标准加入回收率为93．3％～104．2％。[结论]该研究结果为生物体中微量元素的定量分析提供理论依据。

[ Objective ] The purpose of this research was to analyze the trace elements in wheat leaf by inductively coupled plasms mass spectrometry. [ Method] A method for determinating the trace elements in wheat leaf by inductively coupled plasms mass spectrometry was developed, in which ten kinds of beneficial microelements such as B,Mg,K,Ca,Mn,Fe,Cu,Zn,Se,Mo were included. [ Result] The results indicated that the detection limits of the method were in range of 0. 146 - 8. 260 ng/g. The analytical results of wheat standard reference material were consistent with the certified values. The recoveris of standard addition of trace elements in wheat leaf sample were among 93.3% - 104. 2%. [ Conclusion] This research will provide the theoretical references for quantificationally analyzing trace elements in organism.